Electronic Devices and Circuits MCQs with answers Page - 23

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A

Admin • 833.24K Points
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Q. A transformer coupled amplifier would give

  • (A) maximum voltage gain
  • (B) impedance matching
  • (C) maximum current gain
  • (D) larger bandwidth

A

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Q. One of the advantages of a Darlington pair is that it has enormous transformation capacity.

  • (A) voltage
  • (B) current
  • (C) impedance
  • (D) power

A

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Q. The abbreviated designation for input current with a LOW input is

  • (A) vih.
  • (B) iih.
  • (C) iil.
  • (D) iol.

A

Admin • 833.24K Points
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Q. Fan-out for a typical TTL gate is .

  • (A) 10
  • (B) 4
  • (C) 54
  • (D) 100

A

Admin • 833.24K Points
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Q. In order to interface an FPGA with an external device, you must set the value of the

  • (A) sink current.
  • (B) external power supply.
  • (C) source current.
  • (D) all of the above

A

Admin • 833.24K Points
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Q. The abbreviated designator for a LOW output voltage is

  • (A) voh.
  • (B) vil.
  • (C) vol.
  • (D) vih.

A

Admin • 833.24K Points
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Q. The lower transistor of a totem-pole output is saturated when the gate output is

  • (A) high.
  • (B) low.
  • (C) malfunctioning.
  • (D) over driven.

A

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Q. Typical TTL HIGH level output voltage is

  • (A) 0.3 v.
  • (B) 5.0 v.
  • (C) 3.4 v.
  • (D) 4.8 v.

A

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Q. The standard 74XX TTL IC family was originally developed in the

  • (A) 1970s.
  • (B) 1960s.
  • (C) 1950s.
  • (D) 1940s.

A

Admin • 833.24K Points
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Q. The minimum output voltage recognized as a HIGH by a TTL gate is

  • (A) 0.8 v.
  • (B) 2.4 v.
  • (C) 5.0 v.
  • (D) 2.0 v.

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